Question 1

In case of photocopier, a special dry, black powder called toner is given

Accepted Answer

negative charge

Answer

neutral

Answer

first positive then negative

Answer

positive charge

Question 2

A certain wire has a resistance R, the resistance of another wire made from the same material, with same length but twice the diameter will be

Accepted Answer

$\frac{1}{4} R$

Answer

same as R

Answer

2R

Answer

4R

Question 3

Resistance tolerance for gold colour is

Accepted Answer

5%

Answer

none

Answer

20%

Answer

10%

Question 4

A current carrying conductor experiences maximum magnetic force in a magnetic field when it is placed

Accepted Answer

perpendicular to the field

Answer

none

Answer

parallel to the field

Answer

anti parallel to the field

Question 5

The magnetic force on an electron travelling with a speed of $1 	imes 10 ^{8}$ m/s parallel to a field strength of 1 will be

Accepted Answer

$1.6	imes10^{11}$ N

Answer

none

Answer

$1	imes10^{-9}$N

Answer

$1.6	imes10^{5}$ N

Question 6

When ohm meter gives full scale deflection, it means

Accepted Answer

zero resistance

Answer

very high resistance

Answer

small resistance

Answer

infinite resistance

Question 7

An electronic device which can measure current, voltage and resistance is called a

Accepted Answer

digital multimeter

Answer

galvanometer

Answer

ohm meter

Answer

AVO meter

Question 8

The self induction emf is sometimes called

Accepted Answer

back emf

Answer

motional emf

Answer

variable emf

Answer

constant emf

Question 9

Which one is not present in AC generator?

Accepted Answer

split ring

Answer

carbon brush

Answer

coil

Answer

magnetic field

Question 10

The unit of induction is

Accepted Answer

Henry

Answer

none

Answer

$Weber/m^{2}$

Answer

Weber

Question 11

A transformer does not change

Accepted Answer

power level

Answer

voltage level

Answer

frequency level

Answer

current level

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